baber/WOPTO huggingface dataset:
Patent GB-716090-A (GB)
Title: Improvements in or relating to electromagnetic contactors
IPC: H01H50/40
Filed: 1952-11-07
Abstract: 716,090. Electromagnetic switches. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Nov. 7, 1952 [Nov. 28, 1951], No. 28067/52. Class 38(5) A contactor closed by spring means and opened electromagnetically has a closed current conducting loop around a portion of the flux path to delay opening movement of the armature until steady state magnetic conditions obtain, i.e, until the flux has built up by the direct current supplied to the magnet coil. The arrangement ensures a satisfactory contact break. The contactor comprises an E- shaped field structure having horizontal limbs 18, 15, 16 connected by vertical limbs 17, 14, the limb 16 forming a core energizable by a coil 19. Limb 18 is of smaller cross-section than core 16 and therefore of higher reluctance. Limb 15 is surrounded by a copper strap 30. An armature 22 is pivoted on the limb 15 at 21 and carries a contact 6 on an arm 11. the arm 11 being pivoted on the armature at 28 and controlled by a spring 27 acting between the arm and a stirrup 26 attached to the armature. A pair of closing springs 25 (only one shown) act between a fixture 20 and a bracket 24 attached to the armature whereby the contact 6 engages a fixed contact 4 against the bias of spring 27. On energization of the coil 19. the strap 30 opposes flux build-up in the limb 15 driving the flux through the limb 18, the reduced neck portion 29 of which tends to retain the armature in the contactor-closed position. When the flux in core 16 reaches its steady state value, the strap 30 ceases to oppose, also at this flux value the neck portion 29 is saturated, whereupon the armature 22 is moved quickly against the core 16 to open the contacts 4, 6. The contacts are disposed within an arc chute 7 flanked by arcing horns 8, and a series blowout coil. 9 is provided.
Patent GB-261044-A (GB)
Title: Improvements in and relating to asbestos products
IPC: D02G3/20
Filed: 1926-11-08
Abstract: 261,044. World Bestos Corporation, (Assignees of Nanfeldt, W.). Nov. 6, 1926. [Convention date]. Energy-absorbing elements.-Yarn especially adapted to the production of friction and heatresisting fabrics and articles is made from strips of asbestos paper, in which the binder is active when the material is wet. To the asbestos pulp containing starch and alum is added a solution containing sodium resinate just before the paper is formed. A lubricant such as graphite is also added. The strips before making into yarn are rendered flexible, for example, by moistening: the flexibility may be rendered permanent by the incorporation of glycerine. When the yarn is formed on a metallic filament, this filament may be protected from corrosion bv treatment with an agent such as paraffin. Specification 274,936 is referred to.
Patent GB-1325530-A (GB)
Title: Capacitors
IPC: H01G4/22
Filed: 1971-06-16
Abstract: 1325530 Laminates SIEMENS AG 16 June 1971 [26 June 1970] 28088/71 Heading B5N [Also in Divisions B2 and H1] A composite strip for use in manufacturing a wound electrical capacitor comprises strip 1 of porous material, e.g. paper, with metallized layers 2, 3 on opposite surfaces, and a foil made by successive deposition of a varnish layer 6, e.g. cellulose acetate, a metal layer 4 and a varnish layer 5 on to a carrier (the metal being vapour deposited). Fig. 3 (not shown) illustrates a modification of this arrangement.
Patent GB-602287-A (GB)
Title: Improvements in or relating to control and ignition systems for fuel burners
IPC: F23Q7/00
Filed: 1945-10-24
Abstract: 602,287. Burner apparatus. ELLIS, L. S. E. (Robertshaw Thermostat Co.). Oct. 24, 1945, No. 28094. [Classes 75(i) and 75(iii)] [Also in Groups XXIX and XXXV] In a temperature, safety and ignition control system for gas burners such as used in domestic water heaters the closure of a thermally operated switch 54 by an element 66 arranged, for example, in the water heater tank closes the circuit to a coil 44 heating a bimetallic arm 42 opening after a short interval a switch 48 and after a longer interval a switch 46 arranged in the secondary circuit of a transformer 22. This secondary circuit also includes a bridge circuit composed of an arm AB consisting of an electromagnetic or solenoid valve 18 controlling the gas supply to the burner 10, an arm BC consisting of the switch 46, a resistor 38, an electric igniter 32, and the switch 54, an arm CD consisting of a resistor 38, an arm DA consisting of a ballast resistor 36 subjected to the heat of the burner and having a positive coefficient of resistance; and a detector arm BD consisting of a cut-out 40 preferably of the thermal time-delay action type. The primary circuit to the transformer 22 is closed when the main gas supply valve 14 is opened manually or thermostatically. If the switch 54 then calls for heat the circuit to the igniter 32 is closed but the valve 18 remains closed until the switch 48 opens. If ignition is then effected the resistor 36 becomes heated and the current through the valve 18 is sufficient to hold it in the open position until the switch 54 opens. If ignition does not occur, or fails, the valve 18 closes owing to insufficient current passing to maintain it open when the resistor 36 is cold. If the resistor 36 fails during operation the cut-out 40 opens and the valve 18 then closes.
Patent GB-1224951-A (GB)
Title: Dictation-transcription device
Inventor: BOLICK FRED C
IPC: G11B5/008
Filed: 1969-06-04
Abstract: 1,224,951. Feeding record tapes. LANIER ELECTRONIC LABORATORY Inc. 4 June, 1969, No. 28143/69. Heading G5R. Apparatus for recording and playing back dictation on and from an endless tape 11 comprises a recording and monitoring head 16 and a playback head 14, with associated separate bi-directional transport mechanisms R and T; near the recording transport R is a tape guide, e.g. consisting of an erase head 23 and an idler roller 22, so arranged that the tape 11 between the guide and the transport R is held taut as at P when it is driven by the transport R in the recording direction 17 but forms loops P<SP>1</SP> when driven in the reverse direction, a tape-sensing arm 25 controlling a switch 24 so that the apparatus can be seized for a fresh dictation (Fig. 3) only when the tape is taut, preventing erasure or overhearing of the previously recorded dictation.
Patent GB-471785-A (GB)
Title: Improvements in and relating to washing machines
IPC: D06F13/00
Filed: 1936-10-16
Abstract: 471,785. Washing-machines. MILLER, R. R., and GITS, R. J. Oct. 16, 1936, No. 28159. [Class 138 (ii)] The hub 16 of the agitator 22 of a washing- machine is rotatably mounted on a shaft 12 secured eccentrically and at an angle in a head 11 secured to the top of a vertical drive shaft 3 and the point of intersection C of the axes of the shafts 3 and 12 is at the centre of the sphere, of which the lower wall 1 of the container forms a part. In the form shown in the Figure, the agitator comprises a perforated bowlshaped member which is secured to the hub by the bolt 24 screwed into the hub and clamping a spacing tube 25 between its head and the agitator bowl. The tube 25 assists in the agitation. In another form using a bowlshaped agitator but not provided with the tubular extension 25 a stationary undulating plate is removably secured ,within the container above the agitator to co-operate therewith in exerting a squeezing action on the goods. In another form using a plane surface agitator set at an angle, in place of the long bolt 24 and tube 25, a conical cap is screwed on to the upper portion of the hub to form a smooth extension of the same. No ribs or vanes are formed on the operative face of the agitator but the circumferential edge of the plane agitator may be turned upwardly or may be provided with a thickened downwardly extending rim and thickened radial portions on its undersurface merging into the hub.
Patent GB-1346143-A (GB)
Title: Filling- and emptying apparatus for autoclave baskets
IPC: B01J3/02
Filed: 1972-06-16
Abstract: 1346143 Unloading apparatus R BOG JORGENSENS MASKINFABRIK AS 16 June 1972 [17 June 1971] 28249/72 Heading B8E Apparatus for filling and emptying loose bottomed baskets such as autoclave baskets comprises an arcuate main arm 3 connected by a small arm 4 to swing about an axle 2 and having at its other end a lifting platform 10 pivotable about an axle 10a. Curved discs 12, 13 are attached to the platform 12 and small arm 4 respectively and are connected by chains 14a, 14b secured by their ends to the discs and passing between them over pulleys 18, 17, guides on the main arm 3, and then pulleys 16, 15. The main arm 3 is supported and guided by rollers 6 as it leaves an opening 5 in a casing 1 and the platform 10 has rollers 11 on its upper surface. The arrangement is such that a basket placed on the platform 10 with its sides 20 supported has its loose bottom 21 raised or lowered as the main arm 3 swings about the axle 2 to allow filling or emptying, the platform 10 being kept horizontal by the chain connection of the discs 12, 13.
Patent GB-1188763-A (GB)
Title: Cam Mechanism
Inventor: KIERONSKI JOHN PAUL
IPC: F16H25/12
Filed: 1968-06-13
Abstract: 1,188,763. Traverse mechanisms. WHITIN MACHINE WORKS, Inc. 13 June, 1968 [19 June, 1967], No. 28252/68. Heading D1T. [Also in Division F2] To reduce compressive contact stress in a cam drive for reciprocating yarn as it is wound on to a bobbin, wherein a cam groove 12 in a drum 10 has walls coacting with a cam follower 22, the curved surfaces 22a, b of the follower have radii of curvature, at all points therealong ranging between a value substantially greater than one half the width of the cam groove and a value not in excess of, and preferably less than, the minimum radius of the reversal portions 12a of the groove. The portions 12a may each be a curve of varying radius or, as shown, of a single radius R. The curvature of the surfaces 22a, b may be of varying radius or, as shown, of a single radius r. The follower has a length greater than its width, the latter being slightly less than the groove width. The follower accepts, or is formed integrally with, a shaft 24 coupled to a yarn guide sliding parallel to the axis of the drum 10.
Patent GB-1507392-A (GB)
Title: Container turner
IPC: B65B35/56
Filed: 1975-07-04
Abstract: 1507392 Orienting containers on a conveyer PNEUMATIC SCALE CORP 4 July 1975 [23 Sept 1974] 28343/75 Heading B8A Containers X (each having indicia (not shown) on one of its two side faces) are conveyed on a belt 24 (from left to right as viewed in the drawings), and are maintained in predetermined spacing by being held by guide rails 32 against the thread of a guide screw 34. At a position 50 where there is a discontinuity between upstream and downstream sections of both the screw 34 and the rails 32, each container X with its indicia on the wrong side (i.e. the container thus having its orientation 180 degrees out of phase), has its upstream end engaged by a member 66 as the latter is projected laterally from a cylinder 78. The upstream end of the container thus engages the upstream end of the downstream guide rail 32 (as shown in Fig. 5). Continued movement of the container on the belt 24 thus completes the rotation of the article through 180 degrees. This action is assisted by a sloping rail 74. To provide a steady pivotal axis for the container X during the reorientation, each is engaged by a respective pin 54 carried by an endless chain 52. As shown, the pin 54 engages a recess on the top of the container. In a modification, socket members may telescopically engage necks of the containers. After re-orientation spaced plates 162, 162, engage the necks of the containers X to steady the latter. To determine which containers need to be re-orientated, a photo-electric scanner 87 actuates a normally-closed threeway solenoid-operated valve (89) (Fig. 6, not shown), when the position of the indicia identifies the container as being wrongly positioned. This valve causes operation of the member 66, the correct instant of projection being determined by action of a valve (103) (Fig. 6, not shown) actuated by a roller 107 (Fig. 2) engaging a radial projection 109 (Fig. 5) on a shaft 41, coaxial with the screw 34. The system is reactivated after each operation by a valve (110), which is operated by a roller 120. The latter is engaged periodically by the circumference of the helix of the screw 34.
Patent GB-615536-A (GB)
Title: Improvements in frequency discriminators
IPC: H03D3/08
Filed: 1945-10-27
Abstract: 615,536. Frequency modulation; automatic tuning correction. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 27, 1945, No. 28436. Convention date, Oct. 27,1944. [Class 40 (v)] In a frequency discriminator a resistor R1 and capacitor C1 are connected across the input to act as a low-pass filter, resistor R2 and capacitor C2 serving as a high-pass filter, the filters having a desired cross-over frequency. The outputs of the filters feed over diodes 3, 4, load resistors 7, 10 to produce an A.F.C. voltage for a superheterodyne receiver or the circuit may be employed as a detector in a receiver for angle modulated waves. The reactance of the capacitors is chosen equal to the resistance of the resistors at the cross-over frequency.
Patent GB-1302492-A (GB)
IPC: G03F7/037
Filed: 1971-06-17
Abstract: 1302492 Photo-imaging materials KEUFFEL & ESSER CO 17 June 1971 [8 July 1970] 28437/71 Heading G2C A photo-imaging material comprises a support having a light-sensitive coating of a composition comprising an N-alkoxy methyl polyamide having a degree of alkoxy methylation of from 10% to 45% and a light-sensitive halogen containing photoactivator capable of generating halogen freeradicals on exposure to light. The polyamide used in the examples is N-methoxy methyl polyhexamethylene adipamide having a molecular weight of 8000 to 10000 and the photo-activator is preferably a source of bromine free-radicals e.g. carbon tetrabromide and brominated keto compounds. The composition may also include a photosensitizing dye e. g. eosin Y, Rose Bengal and an unsaturated cross-linking compound e.g. methylene bisacrylamide. A method of photo-imaging the material comprises exposing imagewise to light to generate halogen free-radicals, heating from 60‹-130‹C. to complete cross-linking of the polyamide and removing the unexposed areas with a solvent e.g. aqueous solution of lower aliphatic alcohols, chloral, bromal and sodium salicylate. The material may be maintained at a temperature from 60‹ to 130‹C. during the exposure step.
Patent GB-285539-A (GB)
Title: Apparatus for supplying a current of heated air or gas
IPC: F26B23/02
Filed: 1926-11-11
Abstract: 285,539. Elkington, V. Nov. 11, 1926. Drying furnaces and kilns.-Apparatus for drying charges of material such as hops in an oast or kiln comprises a furnace 1 as described in Specification 285,153 for furnishing a current of heated air, a hollow member 7 extending through the charge on the floor 6 and having a valve 8, and a connecting device 12 by which all or part of the heated air normally delivered below the charge may be caused to enter into the hollow member and pass into the space above the charge to dispel the reek. The air passages 2 of the furnace communicate with the outside air by ducts 3 controlled by dampers 4 and the connecting device 12 comprises a hollow member of pliable heat-proof material such as woven asbestos having its upper end attached to a frame 13 fixed to the member 7 and its lower end attached to a frame 14 registering with about one-half of the air outlet of the furnace. By means of cords 15 passing over pulleys 16 the member 12 may be pulled up out of connection with the air outlet and the valve 8 may be closed by a cord 9 passing over a pulley 10, all the heated air being then delivered below the charge. A spreader 17 is arranged at the bottom of the member 7 to distribute the air over the whole of the charge. Additional air passages 19 are provided on each side of the furnace 1 and controlled by shutters. The connecting device 12 may comprise lazy-tongs covered with fireproof material or a box adapted to slide or roll on the top of the furnace and be positioned under the member 7. In a modification, the inner walls of the furnace may be prolonged to meet in the plane of the spreader 17 and shutters may be pivoted to the spreader to control the passage of heated air into the member 7. Specification 259,270, [Class 34 (ii), Drying systems &c.], also is referred to.
Patent GB-742461-A (GB)
Title: Improvements in and relating to coating compositions comprising phenol aldehyde resins
IPC: C09D5/12
Filed: 1949-11-07
Abstract: A coating composition for application to surfaces of steel, other ferrous metals, zinc, aluminium or alloys thereof comprises an acid metal phosphate, phosphoric acid and a solution of a thermally-settable modified phenol-formaldehyde resin which has been prepared in the presence of an initially basic phosphate (e.g. sodium hexametaphosphate or tetrasodium pyrophosphate), said metal phosphate being adapted to react with a metal surface to which the composition is applied to form an insoluble phosphate layer thereon and also to act with said phosphoric acid as a thermo-setting catalyst during stoving.  Specified modifying agents are natural resin, abietic acid or esters therefrom with or without the addition of glycerol, ethylene glycol or penta-erythritol.  The composition is compatible with oil-modified alkyd resins and may be loaded with fillers and pigments.  In examples (1) phenol, formaldehyde and methyl abietate are heated in presence of a catalyst comprising ammonia and sodium hexametaphosphate.  The alkalinity of the catalyst is reduced during the course of the reaction due to conversion of the sodium hexametaphosphate to a neutral or slightly acid orthophosphate. Water is then removed from the mixture, acetone added and condensation arrested by addition of an acidifying agent comprising distilled water, phosphoric acid, manganous hydrogen phosphate and ethylene glycol mono ethyl ether.  Condensation is then completed by heating.  (2) Phenol and formaldehyde are heated in presence of ammonia and sodium hexametaphosphate, water is removed, and then a mixture of rosin, ethylene glycol and acetone added.  The temperature is then adjusted to 70 DEG  C., the acidifying agent of example (1) added and condensation completed by heating.  Specification 661,952 is referred to.ALSO:Surfaces of steel, other ferrous metals, zinc, zinc alloys, aluminium or aluminium alloys are protected by applying to them a composition of a thermosetting modified phenol-formaldehyde resin (see Group IV(a)), an acid metal phosphate and phosphoric acid and thereafter stoving.  During stoving the metal is etched and converted into the metal phosphate, a layer of microcrystalline metal phosphates is deposited on the surface, and a layer of resin is deposited on top of the phosphate layer.  Specification 661,952 is referred to.
Patent GB-1412230-A (GB)
Title: Electrodeposition of enzymes
IPC: C12N11/14
Filed: 1974-06-27
Abstract: 1412230 Electro-deposition of enzymes OWENS-ILLINOIS Inc 27 June 1974 [28 June 1973] 28472/74 Heading C7B An enzyme is electro-deposited from an aqueous dispersion or solution of the enzyme at a non-iso electric pH into a porous inorganic matrix placed between an anode and cathode across which a D.C. field is applied. The matrix may be 10- 80% porous and have average pore size 0.01- 10Á. Suitable matrix materials which may be compacted and sintered are Al 2 O 3 , ZrO 2 , MgO, SiO 2 , ThO 2 , glass, clay, talc, stainless steel and Ag. One or more enzymes may be present selected from hydrolytic, redox and transferase enzymes; many listed enzymes include ribonuclease, chymotrypsin, xanthine oxidase, histidase and urease. An activity of at least 0.001 I.U. per c.c. of matrix may be achieved. The enzyme dispersion or solution may include Ca Cl 2  and a pH regulator, e.g. NaOH, phosphate buffer, tris (hydroxymethyl) amino methane, triethanolamine, Na Salicylate or a mixture of 2-amino-2-methyl- 1,3-propanediol and dithioerythritol. Electrodes of C, stainless steel, Fe, Zn, Cu, Au, Ag, Pt, Al or Ni may be used. The matrix may be held in a housing together with one electrode whereby the enzyme liquid has access to one face of the matrix but not to the electrode; the housing may rotate or be vibrated.
Patent GB-243006-A (GB)
Title: Method for tough annealing of metal alloys
IPC: C22F1/00
Filed: 1925-11-13
Abstract: 243,006. La Cour, J. L., and Lindh, F. O. M. Nov. 13,1924, [Convention date]. Annealing.-Alloys consisting mainly of copper, zinc, tin, lead and aluminium or some of these metals are annealed by slowly heating them in an electric or other furnace from ordinary temperatures to a suitable annealing temperature and then very slowly cooling them, in the same furnace, to a temperature which is below 75 per cent of the annealing temperature before the alloys are exposed to the. air for further cooling. To prevent oxidation of the alloys during the treatment in the furnace. it is closed to prevent the influx of air, and inert gases, such as carbonic acid or nitrogen, may be introduced. Charcoal or similar substances which absorb oxygen may also be introduced into the furnace.
Patent GB-206860-A (GB)
Title: Improvements in and relating to radiators and supporting surfaces for aeroplanes
IPC: B64D33/10
Filed: 1923-11-13
Abstract: 206,860. Heinrich, A. S. Nov. 13, 1922, [Convention date]. Radiators, aircraft. - An aeroplane radiator is shaped to act as a sustaining-surface and is capable of being exposed to a varying extent in order to vary simultaneously the area of the radiating and sustaining surfaces. The radiator may be formed in sections detachably secured together to enable it to be adapted for use with different engines or in different climates. Fig. 1 shows an aeroplane with two radiators 4 of streamlined section which can be extended from or withdrawn into housings 5 by means of right and left hand screws 47, 48 on a shaft operated by the pilot or by a thermostat. The radiators slide upon parallel tubes 30 extending from the fuselage. Flexible tubes 37, 38 from the engine cooling-jackets are connected to perforated pipes 13, 14, Fig. 4, extending through chambers 6, 7 of sheet metal forming the leading and trailing edges of the radiator. Corrugated plates 18, 19 are riveted to plates 15, 16 so as to form separated watertight tubes 8 which communicate through holes 21, 22 with the chambers 6, 7. The plates 15, 16 are stiffened by internal flanges 17, Fig. 5. Each, section of the radiator has end plates 27, 28 connected by tubes 31 through which the tubes 30 slide, adjacent sections being secured together by through-bolts 35, 35<1>. Flanged rings 34, 34<2> adapted to abut against those of an adjacent section surround the ends of the tubes 31 which project beyond the flange at one end of the section and extend' to a corresponding distance, short of the flange at the other end. The tubes 13, 14 of each section are formed with abutting ends rendered watertight by gaskets, the outer ends of the tubes on the outermost section being provided' with caps held in position by bolts 44, Fig. 4, extending through the tubes to spiders at the inner ends of the innermost section. According to the Specification as open to inspection under Sect. 91 (3) (a) series of separate, strips placed side by side may be used instead of the corrugated plates 18, 19. This subject-matter does not appear in the Specification as accepted.